| Author | Prayitno |
| Call Number | AIT Thesis no. EV-89-14 |
| Subject(s) | Sewage--Purification--Chromium removal
|
| Note | A thesis submitted in partial fulfillment of the requirements for
the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A combination of anaerobic filter and rotating biological
contactor system at laboratory scale was operated as one unit
system to treat synthetic wastewater containing chromium.
The soluble COD concentration of wastewater was varied at
about 2000, 1400, and 800 mg/1. The combination system was
operated at constant detention time, it was 4 hours in the AF
unit and 20 hours in the RBC unit, resulting in organic loading
rate of 2.02, 1.41 and 0.77 kg SCOD/m3 /d for the whole system or
12.31, 7.99 and 4.67 kg SCOD/m3/d for the anaerobic filter
system.
No significant differences on the organic carbon removal by
varying the organic loading rate with chromium concentration of
5 mg/1 in wastewater. The removal efficiency of soluble COD was
97, 98, and 96 % and chromium removal efficiency was 98, 99, and
98 % for organic loading rate of 2.02, 1.41,and 0.77 kg SCOD/m3 /d
respectively.
Increasing chromium concentration up to 10 mg/l at organic
loading rate of 0.81 kg SCOD/m3 /d was not influenced in SCOD
removal as well as chromium removal efficiency.
The combination of the anaerobic filter and rotating
biological contactor was found to be effective and have a good
performance for treating organic wastewater containing chromium
in the wide range of organic loading.
Half saturation constants in this system were 14.67 and
1000 mg/l for rotating biological contactor and anaerobic filter
respectively. |
| Year | 1989 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | K. Udornsinrot |
| Examination Committee(s) | Vigneswaran, Saravanamuthu ;Tran, Francis T.
|
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1989 |